6

ADD REMOTE ACCESS AND DETECT OPEN DOORS

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Controlling access to your base is key in the postapocalyptic world. Let’s say you’re being pursued by a herd of brain-hungry zombies. You finally reach your base, and all you have to do to survive another day is get inside to safety. Don’t fumble with keys and get eaten before you can unlock the door. Unlock it before you get there! To help you out, this chapter includes projects that allow you to unlock (or lock) doors without touching them. Just don’t press any door-opening buttons with without checking your surveillance system first; no matter how politely someone knocks (Figure 6-1), you never know ...

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